﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace console
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("请输入第一个数：");
            double Number1 = double.Parse(Console.ReadLine());

            Console.Write("请输入第二个数：");
            double Number2 = double.Parse(Console.ReadLine());
            //int Number2=Convert.ToInt32(Console.ReadLine());
            Console.ReadKey();

            //Console.WriteLine(Number1 + "+" + Number2 + "=" + (Number1 + Number2));
            //Console.WriteLine("{0}+{1}={2}", Number1, Number2, Number1 + Number2);
            Console.WriteLine($"{Number1}+{Number2}={Number1 + Number2}");
            Console.ReadKey();
            Console.WriteLine($"{Number1}-{Number2}={Number1 - Number2}");
            Console.ReadKey();
            Console.WriteLine($"{Number1}*{Number2}={Number1 * Number2}");
            Console.ReadKey();
            Console.WriteLine($"{Number1}/{Number2}={Number1 /Number2}");
            Console.ReadKey();

        }
    }
}
